ISO 8340 Building Construction - Sealants - Determination of Tensile Properties at Continuous Extension

Material Testing

ISO 8340 Building Construction - Sealants - Determination of Tensile Properties at Continuous Extension

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ISO 8340 testing. ISO 8340 specifies a method for determining the tensile properties at maintained elongation of sealants used in joints in building construction.

ISO 8340 Building Construction - Sealants - Determination of Tensile Properties at Continuous Extension

The test specimens are prepared in such a way that the sealant to be tested adheres to two parallel contact surfaces. Test specimens are stretched to a defined width and this extension is maintained under defined conditions. Any loss of adhesion or cohesion is recorded.

The substrate materials used for the preparation of test specimens as defined in ISO 13640 shall be selected from mortar or anodized aluminum or glass. Other substrate materials may be used as agreed by the parties concerned.

The sealant manufacturer's instructions regarding, for example, whether to use a primer and the mixing procedure for multi-component sealants should be followed. The hollow volume created by the substrates and spacers will be filled with sealant.

The test specimens should be placed on the edge of one of the supports. The anti-adhesive substrate should be removed as soon as possible. Samples should be placed in this position to allow the sealant to cure or to dry optimally. Spacers must be held in place during conditioning.

The test procedure should be performed at (23 ± 2)°C and (-20 ± 2)°C. Three test specimens will be tested at each temperature.

EUROLAB assists manufacturers with ISO 8340 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.

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